10th Chemistry Smart Syllabus ALP Notes

10th Class Chemistry Notes – 10th Chemistry According to Smart Syllabus (ALP)

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10th Chemistry English Medium MCQs

Editable EM ALP MCQs

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01.	The characteristics of reversible reaction are many, except following one:
(a)	Products never recombine to form reactants			(b)	They never complete
(c)	They proceed in both ways
(d)	They have a double arrow between reactants and products
02.	For the reaction, the expression for the equilibrium constant is:
(a)		(b)		(c)		(d)
03.	When a system is at equilibrium state:
(a)	The concentration of reactants and products becomes equal
(b)	The opposing reaction (forward and reverse) stop
(c)	The rate of the reverse reaction become very low
(d)	The rates of the forward and reverse reactions become equal
04.	Which one of the following statements is not correct about active mass?
(a)	Rate of reaction is directly proportional to active mass
(b)	Active mass is taken in molar concentration
(c)	Active mass is represented by square brackets
(d)	Active mass means total mass of substances
05.	At dynamic equilibrium:
(a)	The reaction stops to proceed
(b)	The amount of reactants ad products are equal
(c)	The speed of the forward and reverse reactions are equal
(d)	The reaction can no longer be reversed
06.	Nitrogen and hydrogen were reacted together to make ammonia: What will be present in the equilibrium mixture?
(a)	only	(b)	and	(c)	and only	(d)	only
07.	For a reaction between and to form , the units of are:
(a)		(b)		(c)		(d)

01.	The colour of HI is:
	(a)	Orange	(b)	Purple	(c)	Red	(d)	Colourless
02.	The colour of iodine is:
	(a)	Black	(b)	Yellow	(c)	Purple	(d)	Green
03.	Guldberg and Waage put forward law of mass action in:
	(a)	1859	(b)	1869	(c)	1879	(d)	1889
04.	In equilibrium state is equal to:
	(a)		(b)		(c)		(d)
05.	The molar concentration (active mass) is expressed in:
	(a)	{ }	(b)	[ ]	(c)	( )	(d)	All
06.	Units of in the reaction
	(a)		(b)		(c)		(d)	No units
07.	The unit of molar concentration is:
	(a)		(b)		(c)		(d)
08.	At equilibrium state there are possibilities:
	(a)	1	(b)	2	(c)	3	(d)	4

01.	A base is a substance which neutralizes an acid. Which of these substances is not a base?
	(a)	Aqueous ammonia	(b)	Sodium chloride	(c)	Sodium carbonate	(d)	Calcium oxide
02.	Lewis acid-base concept have the following characteristics except:
	(a)	Formation of an adduct			(b)	Formation of a coordinate covalent bond
	(c)	Donation and acceptance of an electron pair			(d)	Donation and acceptance of a proton
03.	Acetic acid is used for:
	(a)	Flavouring food	(b)	Making explosive	(c)	Etching designs	(d)	Cleaning metals
04.	If a liquid has a pH of 7 then it must:
	(a)	Be a colourless and odourless liquid			(b)	Freeze at and boils at
	(c)	Be neutral			(d)	Be a solution containing water
05.	Dilute acids react with carbonates to produce the given products except:
	(a)	Salt	(b)	Water	(c)	Carbon dioxide	(d)	Hydrogen
06.	A reaction between an acid and a base produces:
	(a)	Salt and water	(b)	Salt and gas	(c)	Salt and an acid	(d)	Salt and a base
07.	The conjugate acid of is:
	(a)		(b)		(c)		(d)
08.	What is the pOH of a 0.02M ?
	(a)	1.698	(b)	1.397	(c)	12.31	(d)	12.61
09.	Which one of the following species is not an amphoteric?
	(a)		(b)		(c)		(d)
10.	The product of Lewis acid-base reaction is called adduct. The bond between the adduct specie is:
	(a)	Ionic	(b)	Covalent	(c)	Metallic	(d)	Coordinate
11.	Which ion is the conjugate base of sulphuric acid?
	(a)		(b)		(c)		(d)
12.	Which one of the following is a Lewis base?
	(a)		(b)		(c)		(d)
13.	According to the Lewis concept, acid is a substance which can:
	(a)	Donate a proton			(b)	Donate a pair of electron
	(c)	Accept a proton			(d)	Accept a pair of electron

01.	Lactic acid is found in:
	(a)	Milk	(b)	Apple	(c)	Lemon	(d)	Urine
02.	Which of the following substance is not a base?
	(a)	Aqueous ammonia	(b)	Sodium chloride
	(c)	Sodium carbonate	(d)	Calcium oxide
03.	Citric acid is found in:
	(a)	Lemon	(b)	Apple	(c)	Milk	(d)	Fats
04.	Arrhenius presented the concept of acids and bases in:
	(a)	1787	(b)	1788	(c)	1789	(d)	1790
05.	Bronsted and Lowry put forward acid base concept:
	(a)	1913	(b)	1923	(c)	1933	(d)	1943
06.	Used in manufacturing of soap:
	(a)		(b)		(c)		(d)
07.	pH of neutral substances is always:
	(a)	0	(b)	5	(c)	7	(d)	14
08.	The sum of pH and pOH at is:
	(a)	7	(b)	12	(c)	14	(d)	16
09.	_________ is not composed of a salt.
	(a)	A metallic cation	(b)	Non-metallic anion
	(c)	An anion of a base	(d)	An anion of an acid
10.	is an example:
	(a)	Complex salts	(b)	Double salts	(c)	Normal salts	(d)	Mixed salts
11.	Which acid is used in lead storage batteries as electrolyte?
	(a)		(b)		(c)		(d)
12.	The water of crystallization is responsible for the:
	(a)	Melting point of crystals			(b)	Boiling point of crystals
	(c)	Shapes of crystals			(d)	Transition points of crystals
13.	If the value of pH solution is less than seven it will be:
	(a)	A base	(b)	An alkali	(c)	An acid	(d)	A neutral solution
14.	The base used for the treatment of bee’s sting is:
	(a)		(b)		(c)		(d)

01.	General formula of alkyl radical is:
	(a)		(b)		(c)		(d)
02.	Identify which one of the following compounds is a ketone?
	(a)		(b)		(c)		(d)
03.	The functional group is found in:
	(a)	Carboxylic acid	(b)	Aldehydes	(c)	Alcohols	(d)	Esters
04.	In which of the following groups, oxygen is attached on both sides with carbon atoms?
	(a)	Ketone	(b)	Ether	(c)	Aldehyde	(d)	Ester
05.	Which one of the following compounds is an aldehyde?
	(a)		(b)		(c)		(d)
06.	Formula of acetaldehyde is:
	(a)		(b)		(c)		(d)

01.	Depending on temperature variation, atmosphere is divided into how many regions?
	(a)	One	(b)	Two	(c)	Three	(d)	Four
02.	Thermosphere layer is at height above earth’s surface is:
	(a)	0-12 km	(b)	12-50 km	(c)	50-85 km	(d)	85-120 km
03.	Which pollutant is not found in car exhaust gases?
	(a)		(b)		(c)		(d)
04.	Carbon monoxide is harmful to us because it:
	(a)	Paralyses lungs			(b)	Damages lungs tissues
	(c)	Reduces oxygen carrying ability of hemoglobin			(d)	Makes the blood coagulate
05.	How much atmospheric temperature increase every year due to accumulation of carbon dioxide in iar?
	(a)		(b)		(c)		(d)
06.	Which one of the following is not an air pollutant?
	(a)		(b)		(c)		(d)
07.	Acid rain affects the aquatic life by clogging fish gills because of:
	(a)	Lead metal	(b)	Chromium	(c)	Mercury metal	(d)	Aluminum
08.	pH of rainy water, when it dissolve :
	(a)	5.6-6	(b)	6-6.5	(c)	6.5-7	(d)	7-7.5
09.	Which of the following gas is known as life gas for plants?
	(a)		(b)		(c)		(d)

01.	Water dissolves non-ionic compound by:
	(a)	Ion-ion forces	(b)	Ion-dipole forces
	(c)	Dipole-dipole forces	(d)	Hydrogen bonding
02.	Rapid growth of algae in water bodies is because of detergent having:
	(a)	Carbonate salsts	(b)	Sulphonic acid salts
	(c)	Sulphate salts	(d)	Phosphate salts
03.	Depletion of from water is not because of:
	(a)	Decaying of aquatic plants			(b)	Biodegradation of aquatic plants
	(c)	Rapid growth of aquatic plants			(d)	Decomposition of aquatic plants
04.	Which one of the following diseases causes liver inflammation?
	(a)	Typhoid	(b)	Jaundice	(c)	Cholera	(d)	Hepatitis
05.	Which one of the following diseases causes severe diarrhea and can be fatal?
	(a)	Jaundice	(b)	Dysentery	(c)	Cholera	(d)	Typhoid
06.	Which one of the following gases is used to destroy harmful bacteria in water?
	(a)	Iodine	(b)	Chlorine	(c)	Fluorine	(d)	Bromine
07.	A disease that causes bone and tooth damage is:
	(a)	Fluorosis	(b)	Hepatitis	(c)	Cholera	(d)	Jaundice
08.	Ionic compounds are soluble in water due to:
	(a)	Hydrogen bonding	(b)	Ion-dipole forces
	(c)	Dipole-dipole forces	(d)	Dipole-induced dipole forces
09.	The chemicals used to kill or control pests are called pesticides. They are:
	(a)	Dangerous inorganic chemicals			(b)	Dangerous organic chemicals
	(c)	Beneficial iorganic chemicals			(d)	Beneficial organic chemicals

01.	Concentration is a:
	(a)	Mixing technique	(b)	Separating technique
	(c)	Boiling technique	(d)	Cooling technique
02.	Froth flotation process is used to concentrate the ore on:
	(a)	Density basis	(b)	Concentration basis
	(c)	Wetting basis	(d)	Magnetic basis
03.	Matte is a mixture of:
	(a)	FeS and CuS	(b)	and FeO	(c)	and FeS	(d)	Cus and FeO
04.	In the bessemerization process:
	(a)	Roasted ore is heated	(b)	Molten matte is removed
	(c)	Molten matte is heated	(d)	Molten matte is added
05.	Concentration of the copper ore carried out by:
	(a)	Calcinations	(b)	Roasting	(c)	Froth flotation	(d)	Distillation
06.	When is passed through the ammonical brine the only salt that precipitates is:
	(a)		(b)		(c)		(d)
07.	In Solvay’s process slaked lime is used to:
	(a)	Prepare	(b)	Prepare quick lime
	(c)	Recover ammonia	(d)	Form
08.	When is heated it forms:
	(a)		(b)		(c)		(d)
09.	Formula of urea is:
	(a)		(b)		(c)		(d)

01.	Urea is a nitrogenous fertilizer it consists __________ of nitrogen.
	(a)	26.6%	(b)	36.6%	(c)	46.6%	(d)	56.6%
02.	The nitrogen present in urea is used by plants to synthesize:
	(a)	Sugar	(b)	Proteins	(c)	Fats	(d)	DNA